-- Seed fixture: a direct method call (receiver's declared type is a
-- concrete class, so the emitter dispatches by CALL/method index, not
-- ICALL/vtable -- contrast with run/interface).
class Counter {
  n: Int

  fn add(amount: Int) -> Int {
    return self.n + amount
  }
}

fn main() {
  let c = Counter { n: 10 }
  print_int(c.add(5))
  print_int(c.add(32))
}